Even if you live in Windows, you may be surprised to find that it includes some rather powerful built-in tools for helping you monitor your system and troubleshoot when things go wrong. We've taken a look at Windows' dark corners before and at some awesome features you may have forgotten about. Here are a few more of our favorite overlooked Windows tools.

In this article, the details and instructions are based on Windows 8, but these tools are also available in previous versions of Windows, unless otherwise indicated.

System Information

System Information shows detailed information about many aspects of your system, including hardware resources, driver and application details, Internet settings, and more. You can find at Control Panel > Administrative Tools > System Information or just search for "system" on the Start menu.

Advertisement

Select what you want to see details about in the left pane and the details are shown in the right pane. While there's a lot there to poke around in, you'll probably find these are the most useful displays:

System Summary. This view shows you basic information about the computer, such as the OS version, manufacturer and model of the computer, BIOS version, and amount of memory installed.

Display. This view shows you what type of graphics card (or built-in graphics processor) the computer has, including the manufacturer, model, and amount of memory.

Network Adapter. This view shows you all of the network adapters (wired and wireless) present on the system.

Storage Drives. This view shows you all of the hard drives and optical drives on the system, their capacity, and how much free space they have.

You can't change any settings using the System Information tool, but it's a handy tool for getting quick information about a system without installing any extra tools. You can use it to print or save a report of the current system, which can be really useful if you like to keep files on computers you support for other people. You can also connect System Information to another computer on your network to view information about it.

Advertisement

That said, if you're willing (or able) to install other utilities, there are some out there that provide a lot more information about your system and even some extra features. We've even covered a few, like Speccy, Hardware Freak, and CPU-Z.

Windows Memory Diagnostic

Memory problems are often hard to isolate. Faulty memory can cause everything from freezing applications to unsuccessful installations to full system crashing. And the most frustrating thing about them is that the problems often come and go. Windows Memory Diagnostic can help by running a full scan of the memory installed on your computer.

You can find Windows Memory Diagnostic at Control Panel > Administrative Tools or just by searching "windows memory" at the Start menu. Unfortunately, Windows has to reboot in order to run this tool since it needs to run before Windows is actually loaded on the system. You have the option of rebooting and scanning immediately or scheduling a scan during the next reboot. If you want to go ahead and run the scan, just make sure you've saved and closed out of all your programs before running it.

As your computer restarts, Windows Memory Diagnostics will take over and run the scan and you can just let it go. When it's done, Windows will start and you'll get a message about how the scan went. If you want a little more control, press F1 when the tool starts. You can adjust things like what level test you want to run (those levels are described in the tool) and how many passes the tool should make.

Event Viewer

Windows records events in several different logs, and it logs a lot of events. Depending on how your system is configured, it logs everything from informational events (like when a service starts up okay) to cautions and errors (like when a program crashes or a service can't start) to security events like unsuccessful log on attempts.

Advertisement

You'll find Event Viewer at Control Panel > Administrative Tools or just search for "event" on the Start menu. There's a lot to Event Viewer, but as a regular user, the things that might be of use to you are all under the Windows Logs folder. In particular, these three logs can be helpful:

Application. The Application log is a record of events generated by applications. All Windows services write their status information to this log. This is the most valuable log for monitoring the general health of a computer.

System. The System log is a record of events that concern components of the system itself, including such events as device driver and network failures. This is the most valuable log for finding information on specific errors.

Security. The Security log is a record of events based on any auditing settings you or your company have configured. Unless you suspect somebody is trying to gain access to your computer, this one is going to be less useful than the others.

Now, before we go any further, you should note that you are likely to see a number of cautions and errors pop up in these logs and many of them aren't important at all. Often, a service will fail to start, log an error, and then Windows will start the service successfully when it tries again. If you see an error you're concerned about, check the events following the error to see whether it resolved on its own.

Advertisement

But really, Event Viewer is less about monitoring the health of the computer and more about tracking down problems. If you feel like something strange is going on, like apps crashing or things not starting up as they should, check out Event Viewer for events that may be related.

If you find some errors that you'd like to know more about, note the Event ID and search for information about it. You can almost always find something useful at the Microsoft Knowledge Base when you search using the keywords "event ID" plus the actual ID number.

Performance Monitor

Windows has several tools for monitoring performance. For a quick look at resource use, you can just fire up Windows Task Manager and for a more detailed look, Windows Resource Manager. But Performance Monitor is the king when it comes to isolating performance issues in Windows.

Advertisement

Performance Monitor measures the statistical data generated by various components of your computer. It breaks that data down into three distinct pieces.

Objects. An object represents a major system resource that is either physical or logical in nature. Examples of physical objects are physical disks, processors, and memory. An example of a logical object is TCP, which represents one of the major networking protocols of the TCP/IP suite.

Instances. A separate instance of an object exists for every component of the type the object represents on your computer. For example, if you have three hard disks attached to your computer, there would be three instances of the physical disk object.

Counters. Each instance of an object is further broken down into counters, which are the actual aspects of the object that you can measured. For example, the physical disk object includes a number of counters such as %Disk Time, %Idle Time, and Average Disk Bytes per Read.

You can open Performance Monitor at Control Panel > Administrative Tools > Performance Monitor or by searching for "performance" at the Start menu. When you first open Performance Monitor, it starts measuring a single counter for you by default: %Processor Time.

You can add counters by clicking the Add Counter button (it looks like a plus) and browsing through the available counters. There are a lot of them, so don't be intimidated. For a quick look at basic performance, try measuring these three counters:

Pages/sec. Part of the Memory object, this counter represents the rate at which pages are read from or written to disk during virtual memory operations. Consistently high values can indicate that not enough memory is present on a system.

Avg. Disk Queue Length. Part of the Physical Disk object, this represents the average number of read and write requests queued for the selected disk. Consistent values above zero means requests are backing up, which may indicate not enough memory or a slow disk system.

%Processor Time. Part of the Processor object, this represents the percentage of elapsed time that the processor spends executing non-idle tasks. Consistently high values (over around 80%) may indicate that your processor is bottlenecking your system.

The real power of Performance Monitor (aside from the sheer number of things you can measure) is that you can monitor and log performance over time by leaving the System Monitor running in the background. It doesn't consume a lot of resources on its own, so you can leave it running for the day while you go about your business and then come back later to check things out. If you want to know more about what you can do with Performance Monitor, read up on it over at Microsoft TechNet.

Shared Folders

The Shared Folders tool provides a central place for viewing all of the shared folders in Windows and for managing those folders. You can use it to share or stop sharing a folder, disconnect a user that's connected to a share, set permissions for a share, and more.

Under Shared Folders, you'll see three items you can work with:

Shares. This view shows all of the folders shared on your computer. If you see a dollar sign ($) after the name of the share, that means it's a folder automatically shared by Windows and accessible only by administrative accounts. If you don't see that dollar sign, it's a folder you shared. Right-click a folder to see actions you can take, like stopping the share or configuring advanced properties like connection limits and specific permissions.

Sessions. This view shows all user sessions currently connected to your computer. If someone on the network is accessing a folder you've shared, you'll see it here. Right-click a session to find commands for disconnecting that session or disconnecting all currently-connected sessions. Just be mindful when disconnecting people. They may actually be in the process of working with a file on your system.

Open Files. This view shows all files that are open on the system by a remote user. Right-click an open file and you'll see a command for closing it.

A final couple of notes about these built-in tools. Some are pretty powerful; some are more basic. You can often find third-party tools that suit your needs better. We mentioned a few in this article. But it helps knowing what tools you already have access to, especially if you're working on someone else's computer and may not want to (or be able to) install additional software. Also, many of these tools (like Performance Monitor, Shared Folders, System Information, and Event Viewer) allow you to connect to other Windows computers on your local network, providing an easy way to gather information and troubleshoot remotely.